Improvement in boot and shoe crimping machines



P. MITGH E LL. Boot and Shoe Grimping-M achine.

Patented July 13, 1875.

NA PETERS. PRO

TO-LITMOGRAPHER. WASMIMGTON. D C.

rtrrn Taras yJOSEPH r. MiroHnLL, or New BEDFORD, Ass'rcnon To WILLIAM A. BROWN,

or LYNN, MAssAoHUsETTs.

IMPROVEMENT IN BQOT AND SHOE CRIMPING MACHINES.

Spccification formirg part of'Letters Patent No.l 165,605, dated July 13, 1875; application filed February 19, 1875.

To all 'whom 'it may concern Be it known that I, J osEPH P. MrrcHELL, of New Bedt'ord, in the county of Bristol and State of Massachusetts, have invented certain Inprovements in Boot and Shoe Crimping Machines, of which the following is a specification Figure 1 of the accompanying drawings is a side view of my improved crimping-machine as will be hereinafter nore fully explained, to

hold and stretch the leather as it is pressed through the bifurcations of said jaws or clamps, to crimp it in the desired shape, by a former or last, adjusted to and impelled by the action of a longitudinal screw-shaft, operating in a suitable stand, supporting at one end a vertical frame, arranged'to hold or allow the ready removal of one of the jaws or clamps. This invention also consists of a rubber or other elastic or yielding smoother, attached to, so as to be readily removed from, the outside of the outer jaw or clamp, around its bifur- -cation, to givea uniform pressure and final finish to the leather or other material, all ot' which I will now proceed to more particularly describe.

ln the drawings, A represents the bed, and

the top to receiveflthe pivot and hinged top portion of an outer metallic or other jaw or clamp, F. These clamps or jaws E Fare bifurcated or slotted' in the center to receive and allow the passageof a former or last, G, which is adjusted on one end of the screwshaft B. The inner or supported jaw or clamp E is conveXly or outwardly curved on its upper interior face, the downward continuation of the interior face being beveled or inclined transversely from the edge of the bifurcation or slot to the sides of the jaw or clamp E, whose top is of a semicircular shape, as is the top of thejaw or clamp F, which jaw or clamp F is beveled and curved on its inner face reversely to, so as to fit when closed over, the jaw or clamp E. Sun rounding the slot or bifurcation of the jaw or clamp F, on the outside, is a rubber or other yielding smoother, b, held so as to be readily replaced by a curved or desired shaped rabbeted or other suitable clanp or frame, H,.secured to the clamp -F by screws or otherwise. The clamps E F, when brought together, are held by a hook and staple, c d, or otherwise held together, as preferred.

The operation of my invention is as follows: The former or last G, to which the upper or other stock or material, cut as desired, is secured by a clamp or otherwise, is adjusted on the end of the screwshaft B. The jaw or clamp F is then brought down upon the jaw or clamp E, so as to hold the upper or other stock or material between their beveled 'and curved faces. The jaws or clamps are fastened together by the bottom hooks or bearing uniformly on the material, and giving it final finish as it passes from the outer jaw F; thus forming the upper of one seanf less piece in the desired shape, in an expeditious, smooth, and finished nanner, as will be readily seen on examination without further explanation.

I-Iaving thus described my improvements, what I claim as my invention, ad desire to have secured to me by Letters Patent, is-

1. ln a machine for erimping boots and shoes, hinged bifureated jaws or clamps E F, curved and beveled on their interior faces, as shown, to fit one on the otler and hold the4 material, to prevent its wrinkling as it is passed on a suitable former or last through the bifurcations of the jaws or clanps, substantially as specified.

2. In a boot and shoe crimping machine, in combination, the longitudinal screw-shaft B, former or last G, and bifurcated jaws E F, all substantially as and for the purpose described.

3. In a boot and shoe crimping machine, a rubber or vielding smoother attached to, around the bifurcations of, the jaw or clamp F, in combination with jaw or` clamp E, former or last G, and screw-shaft B, all constructed substantially as and for the purposes specified.

4. The combination of the clamps or jaws E F, frame I), former or last G, screw-shalt B, and stand A", all operating substantially as and for the purposes herein set forth.

In testimony whereof I have 'signed my name to this specification in the presence of two subscribing witnesses.

JosEPH PfMroHnLL.

Vitnesses v I WENDELL H. Conn, 4 ROBERT lt. SHERMAN. 

